"you're a professional lieologist!"

A lie is type of deception in the form of an untruthful statement with the intention to deceive, often with the further intention to maintain a secret or reputation, or to avoid punishment. To lie is to state something one knows is false with the intention that it be taken for the truth by someone else. A liar is a person who is lying, who has lied, or who lies repeatedly.

Lying is typically used to refer to deceptions in oral or written communication. Other forms of deception, such as disguises or forgeries, are generally not considered lies, though the underlying intent may be the same; however, even a true statement can be considered a lie if the person making that statement is doing so to deceive. In this situation, it is the intent of being untruthful rather than the truthfulness of the statement itself that is considered.

Thanks Wikipedia.